a. Moment of Inertia<\/a> Against Horizontal axis (XX)<\/strong><\/span> See the following picture<\/span><\/p>\n Figure 5.2 The moment of inertia about the axis x<\/span><\/p>\n b.<\/strong><\/span> Moment of Inertia Against Lines Vertical axis (YY)<\/strong><\/span> Iy = AX 2<\/sup><\/strong><\/span><\/p>\n See the following page image<\/span><\/p>\n Figure 5.3 The moment of inertia about the axis y<\/span><\/p>\n c.<\/strong><\/span> Polar Moment of Inertia<\/strong><\/span> Ip = Ar 2<\/sup><\/strong><\/span><\/p>\n L<\/strong> Ihat picture following page.<\/span><\/p>\n
\n Moment of inertia of the cross section to a line that is the number of cross-sectional area (element) multiplied by the square of the smallest normal distance to the EAM, or cross-sectional area multiplied by the square of the distance.<\/span> If the cross-sectional area is the smallest elements DA1, DA2, dA3 ….<\/span> and and the distance of the cross section to the XX line is y1, y2, y3 …… yn, then the cross-sectional moment of inertia about the line XX can be written by the following equation:<\/span>
\n Ix = AY 2<\/sup><\/strong><\/span><\/p>\n
<\/a><\/p>\n
\n If the cross-sectional area is the smallest elements DA1, DA2, dA3 ….<\/span> and and the distance of the cross section to line YY is the X1, X2, X3 …… Xn, then the cross-sectional moment of inertia about the line YY can be written by the following equation:<\/span><\/p>\n
<\/a><\/p>\n
\n Namely polar moment of inertia of the cross-sectional moment of inertia of a point or the intersection of the axes of XX and YY axis, the amount is calculated based on the number-smallest cross-sectional area multiplied by the square of the radius or distance of the point normal weight.<\/span> If the cross-sectional area is the smallest elements DA1, DA2, dA3 ….<\/span> and the cross-section and the distance from the cut point to axis X, Y are r1, r2, r3 …… rn, then the polar moment of inertia can be written by the following equation:<\/span><\/p>\n